Bean-picking machine



(No Model.) 2 Sheets-Sheet 1.

E. H. & F. A. CHERRY; BEAN PIGKING MACHINE.

No. 595,523. Patented Deo. 14, 1897.

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.(No Model.) 2 SheetsSheet 2.

E. H. St F. A. GHERRY.

BEAN PIGKING MACHINE.

No. 595,523. Y Patented Dec. 14,1897.

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b UNITED STATES PATENT FEIcE.

I EDWVARD H. CHERRY AND FLORENCE A/(JHERRY, OF OVVOSSO, MICHIGAN.

BEAN-PICKING MACHINE.

SPEGIFI EGATION forming part of Letters Patent No. 595,523, dated December 14, 1897.

Application filed January 9,1897. Serial No. 618,542. (No model.)

To all whom it may concern:

Be it known that we, EDWARD H. CHERRY and FLORENCE A. CHERRY, citizens of the United States, residing at Owosso, in the county of Shiawasse and State of Michigan, have invented certain new and useful Improvements in Bean-Picking Machines; and

we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to improvements in bean-picking machines; and its object is to provide the same with certain newand useful features, hereinafter more fully described, and particularly pointed out in the claims, reference being had to the accompanying drawings, in which Figure 1 is a longitudinal vertical section of a device embodying our invention on the line 1 l of Fig. 2. Fig. 2 is a plan viewof the same with hopper removed and parts broken away to show the construction; Fig. 3, an enlarged detail of the feeding mechanism, and Fig, 4 a detail of the adjustable 'D and pulleys D.

pivot for the bar supporting the upper end of the screen.

A represents any suitable frame supporting a horizontal table B, in each side of which table are elongated openings B and in the forward end a transverse opening B, in which is journaled a roll C. Near the opposite end of the table is journaled another roll 0, having a middle portion of substantially the same length as the roll O and extended at each end and provided with ratchet-wheels The roll G and middle portion of the roll 0 are of greater diameter than the thickness of the table B and extend above and below the plane thereof. Engaging said rolls connecting the same and extending above and below said table is an endless apron E, having thickened edges E. Below the opening B is a spout F, and below the openings B is a spout G, the discharge of which is closed or opened by means of a gate G.

H is a hopper having an inverted conical bottom H, in the lowest point of which is the round opening H, and beneath said opening is the upper end of an inclined screen I, the

.the apron E near the roll 0.

lower end of which screen terminates above supported near its upper end upon a bar J, pivoted in vertically-adjustable bearings J, and near its lower end upon a bar K, attached to spring-pawls L, engaging the ratchets D at one 'end and secured at the other end to the inclined board M, having the opening M near its lower end.

The bearing plates are located within grooves formed in standards J which standards are preferably supported by the boards M and have slots through which bolts J 3 extend from said bearing-plates and secure the latter in adjusted position. Pivot-screws J for the bar J also extend through said slots and bearings and into the ends of said bar.

A stud N is attached to the screen I and projects upward through the axis of the opening H and is provided with an adjustable cone 0, secured in place by a lock-nut 0.

To the movable ends of each of two pivoted treadles P is attached the end of a belt Q, which belt extends upward and over one of the pulleys D on the roll 0 and thence back to the end of the treadle,'to which it is attached by means of an elastic section Q, formed of a coiled spring or other material which will stretch when subjected to strain and again contract when released.

The operation of our device is as follows: The beans to be picked or assorted are placed in the hopper H and tend to flow out Said screen is at the opening H, but are held back by the cone 0, which is adjusted high enough to barely prevent the flow of beans when motionless and low enough to leave a passage through which the beans may pass when agitated. As the treadle P is depressed the strain on the belt Q causes said belt to hug closely to the pulley D, and as the elastic portion Q yields that side of thebelt is elongated and thus turns the roll 0' inthe direction of the inelastic side of the belt Q. When the treadle is released, the elastic portion Q of the belt contracts and the belt runs freelyback over the pulley to its former position, the pawls L and ratchets D serving to prevent theroll from turning backward. Duringthe movement of said roll the screen Iis vibrated by said pawls passing over said ratchets, thus vibrating the stud N and cone 0 and thus agitating the beans and causing them to flow through the opening H" to said screen,which screen is adjusted by moving the bearings of the bar J, so that the inclination of said screen will be such that the beans will not move over the meshes thereof except when the same is vibrated. As said screen is vibrated and the beans pass over it to the apron E below all sand, small beans, and other small particles of matter pass through said screen and falling on the inclined board M escape at the opening M. At the same time the roll C is rotated said apron moves forward and the larger beans, &c., are evenly distributed thereon for inspection and removal of defective ones, which latter are pushed over the thickened edges of said apron into the openings B and escape at G, the said thickened edges of said apron serving to prevent the beans from rolling off the same. The beans remaining on said apron finally fall into the opening B" as said apron passes over roll C and are discharged by the spout F.

Having thus fully described our invention, what we claim, and wish to secure by Letters Patent, is

1. The combination with the hopper, having an opening in its bottom, and a pivoted vibrating screen beneath said hopper, a device carried by said screen for alternately covering and uncovering said opening as the screen is vibrated, and an adjustable bearing for the pivots of said screen.

2. In combination, a hopper having an inverted conical bottom and an opening therein, a screen beneath said opening, verticallyadjustable pivots supporting said screen, a stud attached to said screen and projecting through said opening and an adjustable cone on said stud beneath said opening, substantially as described.

3. In a bean-picking machine the combination with the driving-roll having a pulley, a pivoted treadle and a pivoted screen, of a ratchet 011 said roll, a belt engaging the pulley and treadle and having an elastic section in one of its sides and a pawl fixed at one of its ends and engaging said ratchet at its other end to prevent motion of the roll in one direction, said pawl being connected between its ends to said screen and serving thereby also to vibrate the latter, substantially as described.

4. In combination with an endless apron, a vibrating screen and a hopper having a discharge-opening and feed mechanism, a roll engaging said apron, ratchets and pulleys on said roll, pawls engaging said ratchets and screen, pivoted treadles, belts having both ends attached to said treadles and an elastic section near one end, and engaging said pulleys to rotate said roll, substantially as described.

5. The combination of a table having side and end openings, rolls near each end of said table, an endless apron on said rolls, spouts beneath said openings, ratchets and pulleys on one of said rolls,pawls engaging said ratchets, pivoted treadles, belts having elastic sections, and attached to said treadles and engaging said pulleys, an inclined screen vibrated by said pawls, a hopper above said screen having a discharge-openin g, a stud attached to the screen and extending through said opening and a cone on said stud, substantially as described.

In testimony whereof we affix our signatures in presence of two Witnesses.

EDNVARD II. CHERRY. FLORENCE A. CHERRY.

Vitnesses:

CYRUS REIMER, 0. II. THOMAS. 

